The Illager Leader call the Illagers through the wall to attack the mobs.

1. Summon a vindicator with this NBT And summon a husk next to it

/summon vindicator ~ ~ ~ {PersistenceRequired:1b,Johnny:1b,PatrolLeader:1b,Patrolling:1b,CanJoinRaid:1b}

2. Summon a pillager around you

The pillagers will try to attack the mob permanently. In the case of an evoker, MC-147574 is triggered.